计算机应用 ›› 2015, Vol. 35 ›› Issue (7): 1805-1808.DOI: 10.11772/j.issn.1001-9081.2015.07.1805

• 网络与通信 •    下一篇

基于频谱合约的协作频谱共享方法

赵楠, 武明虎, 周先军, 熊炜, 曾春艳   

  1. 湖北工业大学 太阳能高效利用湖北省协同创新中心, 武汉 430068
  • 收稿日期:2015-01-21 修回日期:2015-03-27 出版日期:2015-07-10 发布日期:2015-07-17
  • 通讯作者: 赵楠(1983-),女,河南漯河人,讲师,博士,主要研究方向:认知无线电,nzhao@mail.hbut.edu.cn
  • 作者简介:武明虎(1975-),男,湖北恩施人,副教授,博士,主要研究方向:通信信号处理; 周先军(1970-),男,湖北孝感人,副教授,博士,主要研究方向:无线通信系统; 熊炜(1976-),男,湖北宜昌人,讲师,博士,主要研究方向:无线网络; 曾春艳(1986-),女,湖北武汉人,讲师,博士,主要研究方向:通信信号处理。
  • 基金资助:

    湖北省自然科学基金资助项目(2015CFB646, 2014CFB589);太阳能高效利用湖北省协同创新中心开放基金资助项目(HBSKFMS2014033);湖北工业大学博士科研启动基金资助项目(BSQD13029);国家自然科学基金资助项目(61471162);湖北省教育厅重点资助项目(D20141406)。

Cooperative spectrum sharing method based on spectrum contract

ZHAO Nan, WU Minghu, ZHOU Xianjun, XIONG Wei, ZENG Chunyan   

  1. Hubei Collaborative Innovation Center for High-Efficient Utilization of Solar Energy, Hubei University of Technology, Wuhan Hubei 430068, China
  • Received:2015-01-21 Revised:2015-03-27 Online:2015-07-10 Published:2015-07-17

摘要:

针对授权频谱资源不足的问题,结合非对称网络信息的特点和通信双方自私性的需求,提出一种多用户协作频谱共享(CSS)合约机制的设计与实现方法。首先,通过将CSS映射成劳动力市场,研究对称网络信息条件下多用户频谱合约建模方法;在此基础上,针对合约签订后非授权用户(SU)行为隐匿性引起的道德风险问题,研究非对称网络信息条件下频谱合约建模方法,以激励双方协作行为和保证频谱共享的实现。实验结果表明,在授权用户(PU)直接传输速率低于0.2 b/s时,协作频谱共享时整个系统容量是双方不参与共享时的3倍以上。提出的多用户CSS合约机制能为无线频谱的高效利用和资源共享提供新思路。

关键词: 认知无线电, 协作频谱共享, 合约设计, 非对称网络信息, 道德风险

Abstract:

To alleviate the shortage of licensed spectrum resource, a method to design and implement the multi-user Cooperative Spectrum Sharing (CSS) mechanism was proposed based on the characteristics of asymmetric network information and selfishness of communication users. First, by modeling the CSS as a labor market, a modeling method for the multi-user contract-based CSS framework was investigated under the symmetric network information scenario. Then, to avoid the moral hazard problem due to the hidden-action of Secondary Users (SUs) after contract assignment, a contract-based CSS model was proposed to incentivize the contribution of SUs for ensuring spectrum sharing. The experimental results show that, when the direct transmission rate of Primary User (PU) is less than 0.2 b/s, in comparison with the case of non-cooperative spectrum sharing, the capacity of network is more than 3 times larger. The proposed multi-user contract-based CSS framework will put forward new ideas for efficient sharing and utilization of spectrum resource.

Key words: cognitive radio, Cooperative Spectrum Sharing (CSS), contract design, asymmetric network information, moral hazard

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